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In order to use some content on this site, plug-ins and browsing software may be required depending on the usage environment. A plugin is an external software that extends functions that the website (browser) does not have as standard.

In order to open PDF files, you may need a separate PDF reader.
If you do not have it, you can download it free of charge from Adobe.
Download page (external site) of Adobe Acrobat Reader DC

In order to view Microsoft Office® documents (Word®, Excel®, PowerPoint®), software that supports Microsoft Office® documents such as Microsoft Office® and OpenOffice.org may be required.